=per #3615 Fix InvalidActorNameException in persistence tests

- use overridden processor and channel ids
- no need anymore to wait for processor instances to stop
- unrelated: fix wrong artifact names in documentation
Merge pull request #1736 from eligosource/wip-3615-fix-invalid-actor-name

#3615 InvalidActorNameException in persistence tests fixed
Merge remote-tracking branch: upstream/master